// James Fancy, May 2009
// http://happy.jamesfancy.cn

var alCoder = {};

// DES encrypt/decrypt messages.
// The algorithm is implemented by Paul Tero.
alCoder.des = {
    encrypt: function(key, message) {
        var base64 = alCoder.base64.encode2(message);
        return alCoder.$des.des(key, base64, true, 0);
    },

    decrypt: function(key, code) {
        var base64 = alCoder.$des.des(key, code, false, 0);
        return alCoder.base64.decode2(base64);
    }
};

// MD5 algorithm is implemented by www.webtoolkit.info
alCoder.md5 = {
    hex: function(string) {
        return alCoder.$md5.MD5(string);
    },
    HEX: function(string) {
        return alCoder.$md5.MD5(string).toUpperCase();
    }
};

// Base64 encode/decode for signle byte characters and 2-bytes characters.
alCoder.base64 = {
    EN_CHARS: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split(""),
    DE_MARKS: new Array (
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
        52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
        -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
        15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
        -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
        41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1
    ),
    PT_MARKS: new Array(0, 0, 0x3f, 0, 0x0f, 0, 0x03),

    encode: function(data) {
        var codes = new Array();
        var length = data.length;
        var mod = length % 3;
        length = length - mod;
        var code, c;
        for (var i = 0; i < length; i += 3) {
            c = data.charCodeAt(i);
            codes.push(this.EN_CHARS[(c >> 2) & 0x3f]);
            code = (c << 4) & 0x30;
            c = data.charCodeAt(i + 1);
            codes.push(this.EN_CHARS[code | ((c >> 4) & 0x0f)]);
            code = (c << 2) & 0x3c;
            c = data.charCodeAt(i + 2);
            codes.push(this.EN_CHARS[code | ((c >> 6) & 0x03)]);
            codes.push(this.EN_CHARS[c & 0x3f]);
        }

        if (mod == 2) {
            c = data.charCodeAt(i);
            codes.push(this.EN_CHARS[(c >> 2) & 0x3f]);
            code = (c << 4) & 0x30;
            c = data.charCodeAt(i + 1);
            codes.push(this.EN_CHARS[code | ((c >> 4) & 0x0f)]);
            codes.push(this.EN_CHARS[(c << 2) & 0x3c]);
            codes.push('=');
        } else if (mod == 1) {
            c = data.charCodeAt(i);
            codes.push(this.EN_CHARS[(c >> 2) & 0x3f]);
            codes.push(this.EN_CHARS[(c << 4) & 0x30]);
            codes.push('=');
            codes.push('=');
        }

        return codes.join("");
    },

    decode: function(code) {
        code = code.replace(/[^a-zA-Z0-9+\/]/g, "");
        var mod = code.length % 4;
        var length = code.length - mod;
        var data = new Array();
        var c = new Array(0, 0, 0, 0);
        for (var i = 0; i < length; i += 4) {
            c[0] = this.DE_MARKS[code.charCodeAt(i)];
            c[1] = this.DE_MARKS[code.charCodeAt(i + 1)];
            c[2] = this.DE_MARKS[code.charCodeAt(i + 2)];
            c[3] = this.DE_MARKS[code.charCodeAt(i + 3)];
            data.push(String.fromCharCode((c[0] << 2) | (c[1] >> 4 & 0x0f)));
            data.push(String.fromCharCode(((c[1] << 4) & 0xf0) | (c[2] >> 2) & 0x3f));
            data.push(String.fromCharCode(((c[2] << 6) & 0xc0) | c[3]));
        }

        if (mod == 2) {
            c[0] = this.DE_MARKS[code.charCodeAt(i)];
            c[1] = this.DE_MARKS[code.charCodeAt(i + 1)];
            data.push(String.fromCharCode((c[0] << 2) | (c[1] >> 4 & 0x0f)));
        } else if (mod == 3) {
            c[0] = this.DE_MARKS[code.charCodeAt(i)];
            c[1] = this.DE_MARKS[code.charCodeAt(i + 1)];
            c[2] = this.DE_MARKS[code.charCodeAt(i + 2)];
            data.push(String.fromCharCode((c[0] << 2) | (c[1] >> 4 & 0x0f)));
            data.push(String.fromCharCode(((c[1] << 4) & 0xf0) | (c[2] >> 2) & 0x3f));
        }

        return data.join("");
    },

    encode2: function(data) {
        var data2 = new Array();
        var length = data.length;
        var c;
        for (var i = 0; i < length; i++) {
            c = data.charCodeAt(i);
            data2.push(String.fromCharCode((c >> 8) & 0xff));
            data2.push(String.fromCharCode(c & 0xff));
        }

        return this.encode(data2.join(""));
    },

    decode2: function(code) {
        var data2 = this.decode(code);
        var length = data2.length;
        var data = new Array();
        for (var i = 0; i < length; i += 2) {
            data.push(String.fromCharCode(((data2.charCodeAt(i) << 8) & 0xff00)
                | (data2.charCodeAt(i + 1) & 0xff)));
        }
        return data.join("");
    }
};

////////////////////////////////////////////////////////////////////////////////
alCoder.$des = {
    //Paul Tero, July 2001
    //http://www.tero.co.uk/des/
    //
    //Optimised for performance with large blocks by Michael Hayworth, November 2001
    //http://www.netdealing.com
    //
    //THIS SOFTWARE IS PROVIDED "AS IS" AND
    //ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    //IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    //ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
    //FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    //DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    //OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    //HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    //LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    //OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    //SUCH DAMAGE.

    //des
    //this takes the key, the message, and whether to encrypt or decrypt
    des: function (key, message, encrypt, mode, iv, padding) {
        //declaring this locally speeds things up a bit
        var spfunction1 = new Array (0x1010400,0,0x10000,0x1010404,0x1010004,0x10404,0x4,0x10000,0x400,0x1010400,0x1010404,0x400,0x1000404,0x1010004,0x1000000,0x4,0x404,0x1000400,0x1000400,0x10400,0x10400,0x1010000,0x1010000,0x1000404,0x10004,0x1000004,0x1000004,0x10004,0,0x404,0x10404,0x1000000,0x10000,0x1010404,0x4,0x1010000,0x1010400,0x1000000,0x1000000,0x400,0x1010004,0x10000,0x10400,0x1000004,0x400,0x4,0x1000404,0x10404,0x1010404,0x10004,0x1010000,0x1000404,0x1000004,0x404,0x10404,0x1010400,0x404,0x1000400,0x1000400,0,0x10004,0x10400,0,0x1010004);
        var spfunction2 = new Array (-0x7fef7fe0,-0x7fff8000,0x8000,0x108020,0x100000,0x20,-0x7fefffe0,-0x7fff7fe0,-0x7fffffe0,-0x7fef7fe0,-0x7fef8000,-0x80000000,-0x7fff8000,0x100000,0x20,-0x7fefffe0,0x108000,0x100020,-0x7fff7fe0,0,-0x80000000,0x8000,0x108020,-0x7ff00000,0x100020,-0x7fffffe0,0,0x108000,0x8020,-0x7fef8000,-0x7ff00000,0x8020,0,0x108020,-0x7fefffe0,0x100000,-0x7fff7fe0,-0x7ff00000,-0x7fef8000,0x8000,-0x7ff00000,-0x7fff8000,0x20,-0x7fef7fe0,0x108020,0x20,0x8000,-0x80000000,0x8020,-0x7fef8000,0x100000,-0x7fffffe0,0x100020,-0x7fff7fe0,-0x7fffffe0,0x100020,0x108000,0,-0x7fff8000,0x8020,-0x80000000,-0x7fefffe0,-0x7fef7fe0,0x108000);
        var spfunction3 = new Array (0x208,0x8020200,0,0x8020008,0x8000200,0,0x20208,0x8000200,0x20008,0x8000008,0x8000008,0x20000,0x8020208,0x20008,0x8020000,0x208,0x8000000,0x8,0x8020200,0x200,0x20200,0x8020000,0x8020008,0x20208,0x8000208,0x20200,0x20000,0x8000208,0x8,0x8020208,0x200,0x8000000,0x8020200,0x8000000,0x20008,0x208,0x20000,0x8020200,0x8000200,0,0x200,0x20008,0x8020208,0x8000200,0x8000008,0x200,0,0x8020008,0x8000208,0x20000,0x8000000,0x8020208,0x8,0x20208,0x20200,0x8000008,0x8020000,0x8000208,0x208,0x8020000,0x20208,0x8,0x8020008,0x20200);
        var spfunction4 = new Array (0x802001,0x2081,0x2081,0x80,0x802080,0x800081,0x800001,0x2001,0,0x802000,0x802000,0x802081,0x81,0,0x800080,0x800001,0x1,0x2000,0x800000,0x802001,0x80,0x800000,0x2001,0x2080,0x800081,0x1,0x2080,0x800080,0x2000,0x802080,0x802081,0x81,0x800080,0x800001,0x802000,0x802081,0x81,0,0,0x802000,0x2080,0x800080,0x800081,0x1,0x802001,0x2081,0x2081,0x80,0x802081,0x81,0x1,0x2000,0x800001,0x2001,0x802080,0x800081,0x2001,0x2080,0x800000,0x802001,0x80,0x800000,0x2000,0x802080);
        var spfunction5 = new Array (0x100,0x2080100,0x2080000,0x42000100,0x80000,0x100,0x40000000,0x2080000,0x40080100,0x80000,0x2000100,0x40080100,0x42000100,0x42080000,0x80100,0x40000000,0x2000000,0x40080000,0x40080000,0,0x40000100,0x42080100,0x42080100,0x2000100,0x42080000,0x40000100,0,0x42000000,0x2080100,0x2000000,0x42000000,0x80100,0x80000,0x42000100,0x100,0x2000000,0x40000000,0x2080000,0x42000100,0x40080100,0x2000100,0x40000000,0x42080000,0x2080100,0x40080100,0x100,0x2000000,0x42080000,0x42080100,0x80100,0x42000000,0x42080100,0x2080000,0,0x40080000,0x42000000,0x80100,0x2000100,0x40000100,0x80000,0,0x40080000,0x2080100,0x40000100);
        var spfunction6 = new Array (0x20000010,0x20400000,0x4000,0x20404010,0x20400000,0x10,0x20404010,0x400000,0x20004000,0x404010,0x400000,0x20000010,0x400010,0x20004000,0x20000000,0x4010,0,0x400010,0x20004010,0x4000,0x404000,0x20004010,0x10,0x20400010,0x20400010,0,0x404010,0x20404000,0x4010,0x404000,0x20404000,0x20000000,0x20004000,0x10,0x20400010,0x404000,0x20404010,0x400000,0x4010,0x20000010,0x400000,0x20004000,0x20000000,0x4010,0x20000010,0x20404010,0x404000,0x20400000,0x404010,0x20404000,0,0x20400010,0x10,0x4000,0x20400000,0x404010,0x4000,0x400010,0x20004010,0,0x20404000,0x20000000,0x400010,0x20004010);
        var spfunction7 = new Array (0x200000,0x4200002,0x4000802,0,0x800,0x4000802,0x200802,0x4200800,0x4200802,0x200000,0,0x4000002,0x2,0x4000000,0x4200002,0x802,0x4000800,0x200802,0x200002,0x4000800,0x4000002,0x4200000,0x4200800,0x200002,0x4200000,0x800,0x802,0x4200802,0x200800,0x2,0x4000000,0x200800,0x4000000,0x200800,0x200000,0x4000802,0x4000802,0x4200002,0x4200002,0x2,0x200002,0x4000000,0x4000800,0x200000,0x4200800,0x802,0x200802,0x4200800,0x802,0x4000002,0x4200802,0x4200000,0x200800,0,0x2,0x4200802,0,0x200802,0x4200000,0x800,0x4000002,0x4000800,0x800,0x200002);
        var spfunction8 = new Array (0x10001040,0x1000,0x40000,0x10041040,0x10000000,0x10001040,0x40,0x10000000,0x40040,0x10040000,0x10041040,0x41000,0x10041000,0x41040,0x1000,0x40,0x10040000,0x10000040,0x10001000,0x1040,0x41000,0x40040,0x10040040,0x10041000,0x1040,0,0,0x10040040,0x10000040,0x10001000,0x41040,0x40000,0x41040,0x40000,0x10041000,0x1000,0x40,0x10040040,0x1000,0x41040,0x10001000,0x40,0x10000040,0x10040000,0x10040040,0x10000000,0x40000,0x10001040,0,0x10041040,0x40040,0x10000040,0x10040000,0x10001000,0x10001040,0,0x10041040,0x41000,0x41000,0x1040,0x1040,0x40040,0x10000000,0x10041000);

        //create the 16 or 48 subkeys we will need
        var keys = this.$des_createKeys (key);
        var m=0, i, j, temp, temp2, right1, right2, left, right, looping;
        var cbcleft, cbcleft2, cbcright, cbcright2
        var endloop, loopinc;
        var len = message.length;
        var chunk = 0;
        //set up the loops for single and triple des
        var iterations = keys.length == 32 ? 3 : 9; //single or triple des
        if (iterations == 3) {looping = encrypt ? new Array (0, 32, 2) : new Array (30, -2, -2);}
        else {looping = encrypt ? new Array (0, 32, 2, 62, 30, -2, 64, 96, 2) : new Array (94, 62, -2, 32, 64, 2, 30, -2, -2);}

        //pad the message depending on the padding parameter
        if (padding == 2) message += "        "; //pad the message with spaces
        else if (padding == 1) {temp = 8-(len%8); message += String.fromCharCode (temp,temp,temp,temp,temp,temp,temp,temp); if (temp==8) len+=8;} //PKCS7 padding
        else if (!padding) message += "\0\0\0\0\0\0\0\0"; //pad the message out with null bytes

        //store the result here
        result = "";
        tempresult = "";

        if (mode == 1) { //CBC mode
            cbcleft = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
            cbcright = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
            m=0;
        }

        //loop through each 64 bit chunk of the message
        while (m < len) {
            left = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++);
            right = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++);

            //for Cipher Block Chaining mode, xor the message with the previous result
            if (mode == 1) {if (encrypt) {left ^= cbcleft; right ^= cbcright;} else {cbcleft2 = cbcleft; cbcright2 = cbcright; cbcleft = left; cbcright = right;}}

            //first each 64 but chunk of the message must be permuted according to IP
            temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
            temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);
            temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);
            temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
            temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);

            left = ((left << 1) | (left >>> 31));
            right = ((right << 1) | (right >>> 31));

            //do this either 1 or 3 times for each chunk of the message
            for (j=0; j<iterations; j+=3) {
                endloop = looping[j+1];
                loopinc = looping[j+2];
                //now go through and perform the encryption or decryption
                for (i=looping[j]; i!=endloop; i+=loopinc) { //for efficiency
                    right1 = right ^ keys[i];
                    right2 = ((right >>> 4) | (right << 28)) ^ keys[i+1];
                    //the result is attained by passing these bytes through the S selection functions
                    temp = left;
                    left = right;
                    right = temp ^ (spfunction2[(right1 >>> 24) & 0x3f] | spfunction4[(right1 >>> 16) & 0x3f]
                            | spfunction6[(right1 >>>  8) & 0x3f] | spfunction8[right1 & 0x3f]
                            | spfunction1[(right2 >>> 24) & 0x3f] | spfunction3[(right2 >>> 16) & 0x3f]
                            | spfunction5[(right2 >>>  8) & 0x3f] | spfunction7[right2 & 0x3f]);
                }
                temp = left; left = right; right = temp; //unreverse left and right
            } //for either 1 or 3 iterations

            //move then each one bit to the right
            left = ((left >>> 1) | (left << 31));
            right = ((right >>> 1) | (right << 31));

            //now perform IP-1, which is IP in the opposite direction
            temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
            temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
            temp = ((right >>> 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);
            temp = ((left >>> 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);
            temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);

            //for Cipher Block Chaining mode, xor the message with the previous result
            if (mode == 1) {if (encrypt) {cbcleft = left; cbcright = right;} else {left ^= cbcleft2; right ^= cbcright2;}}
            tempresult += String.fromCharCode ((left>>>24), ((left>>>16) & 0xff), ((left>>>8) & 0xff), (left & 0xff), (right>>>24), ((right>>>16) & 0xff), ((right>>>8) & 0xff), (right & 0xff));

            chunk += 8;
            if (chunk == 512) {result += tempresult; tempresult = ""; chunk = 0;}
        } //for every 8 characters, or 64 bits in the message

        //return the result as an array
        return result + tempresult;
    }, //end of des

    //des_createKeys
    //this takes as input a 64 bit key (even though only 56 bits are used)
    //as an array of 2 integers, and returns 16 48 bit keys
    $des_createKeys: function(key) {
        //declaring this locally speeds things up a bit
        pc2bytes0  = new Array (0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204);
        pc2bytes1  = new Array (0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101);
        pc2bytes2  = new Array (0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808,0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808);
        pc2bytes3  = new Array (0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000);
        pc2bytes4  = new Array (0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x1010,0x41010,0x1000,0x41000,0x1010,0x41010);
        pc2bytes5  = new Array (0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420);
        pc2bytes6  = new Array (0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002);
        pc2bytes7  = new Array (0,0x10000,0x800,0x10800,0x20000000,0x20010000,0x20000800,0x20010800,0x20000,0x30000,0x20800,0x30800,0x20020000,0x20030000,0x20020800,0x20030800);
        pc2bytes8  = new Array (0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002);
        pc2bytes9  = new Array (0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408);
        pc2bytes10 = new Array (0,0x20,0,0x20,0x100000,0x100020,0x100000,0x100020,0x2000,0x2020,0x2000,0x2020,0x102000,0x102020,0x102000,0x102020);
        pc2bytes11 = new Array (0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200);
        pc2bytes12 = new Array (0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010);
        pc2bytes13 = new Array (0,0x4,0x100,0x104,0,0x4,0x100,0x104,0x1,0x5,0x101,0x105,0x1,0x5,0x101,0x105);

        //how many iterations (1 for des, 3 for triple des)
        var iterations = key.length > 8 ? 3 : 1; //changed by Paul 16/6/2007 to use Triple DES for 9+ byte keys
        //stores the return keys
        var keys = new Array (32 * iterations);
        //now define the left shifts which need to be done
        var shifts = new Array (0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0);
        //other variables
        var lefttemp, righttemp, m=0, n=0, temp;

        for (var j=0; j<iterations; j++) { //either 1 or 3 iterations
            left = (key.charCodeAt(m++) << 24) | (key.charCodeAt(m++) << 16) | (key.charCodeAt(m++) << 8) | key.charCodeAt(m++);
            right = (key.charCodeAt(m++) << 24) | (key.charCodeAt(m++) << 16) | (key.charCodeAt(m++) << 8) | key.charCodeAt(m++);

            temp = ((left >>> 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
            temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);
            temp = ((left >>> 2) ^ right) & 0x33333333; right ^= temp; left ^= (temp << 2);
            temp = ((right >>> -16) ^ left) & 0x0000ffff; left ^= temp; right ^= (temp << -16);
            temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
            temp = ((right >>> 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
            temp = ((left >>> 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);

            //the right side needs to be shifted and to get the last four bits of the left side
            temp = (left << 8) | ((right >>> 20) & 0x000000f0);
            //left needs to be put upside down
            left = (right << 24) | ((right << 8) & 0xff0000) | ((right >>> 8) & 0xff00) | ((right >>> 24) & 0xf0);
            right = temp;

            //now go through and perform these shifts on the left and right keys
            for (i=0; i < shifts.length; i++) {
                //shift the keys either one or two bits to the left
                if (shifts[i]) {left = (left << 2) | (left >>> 26); right = (right << 2) | (right >>> 26);}
                else {left = (left << 1) | (left >>> 27); right = (right << 1) | (right >>> 27);}
                left &= -0xf; right &= -0xf;

                //now apply PC-2, in such a way that E is easier when encrypting or decrypting
                //this conversion will look like PC-2 except only the last 6 bits of each byte are used
                //rather than 48 consecutive bits and the order of lines will be according to
                //how the S selection functions will be applied: S2, S4, S6, S8, S1, S3, S5, S7
                lefttemp = pc2bytes0[left >>> 28] | pc2bytes1[(left >>> 24) & 0xf]
                        | pc2bytes2[(left >>> 20) & 0xf] | pc2bytes3[(left >>> 16) & 0xf]
                        | pc2bytes4[(left >>> 12) & 0xf] | pc2bytes5[(left >>> 8) & 0xf]
                        | pc2bytes6[(left >>> 4) & 0xf];
                righttemp = pc2bytes7[right >>> 28] | pc2bytes8[(right >>> 24) & 0xf]
                        | pc2bytes9[(right >>> 20) & 0xf] | pc2bytes10[(right >>> 16) & 0xf]
                        | pc2bytes11[(right >>> 12) & 0xf] | pc2bytes12[(right >>> 8) & 0xf]
                        | pc2bytes13[(right >>> 4) & 0xf];
                temp = ((righttemp >>> 16) ^ lefttemp) & 0x0000ffff;
                keys[n++] = lefttemp ^ temp; keys[n++] = righttemp ^ (temp << 16);
            }
        } //for each iterations
        //return the keys we've created
        return keys;
    } //end of des_createKeys
};

alCoder.$md5 = {
    // MD5 (Message-Digest Algorithm)
    // http://www.webtoolkit.info/

    MD5: function(string) {

        function RotateLeft(lValue, iShiftBits) {
            return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits));
        }

        function AddUnsigned(lX,lY) {
            var lX4,lY4,lX8,lY8,lResult;
            lX8 = (lX & 0x80000000);
            lY8 = (lY & 0x80000000);
            lX4 = (lX & 0x40000000);
            lY4 = (lY & 0x40000000);
            lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
            if (lX4 & lY4) {
                return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
            }
            if (lX4 | lY4) {
                if (lResult & 0x40000000) {
                    return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
                } else {
                    return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
                }
            } else {
                return (lResult ^ lX8 ^ lY8);
            }
         }

         function F(x,y,z) { return (x & y) | ((~x) & z); }
         function G(x,y,z) { return (x & z) | (y & (~z)); }
         function H(x,y,z) { return (x ^ y ^ z); }
        function I(x,y,z) { return (y ^ (x | (~z))); }

        function FF(a,b,c,d,x,s,ac) {
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        };

        function GG(a,b,c,d,x,s,ac) {
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        };

        function HH(a,b,c,d,x,s,ac) {
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        };

        function II(a,b,c,d,x,s,ac) {
            a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
            return AddUnsigned(RotateLeft(a, s), b);
        };

        function ConvertToWordArray(string) {
            var lWordCount;
            var lMessageLength = string.length;
            var lNumberOfWords_temp1=lMessageLength + 8;
            var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
            var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
            var lWordArray=Array(lNumberOfWords-1);
            var lBytePosition = 0;
            var lByteCount = 0;
            while ( lByteCount < lMessageLength ) {
                lWordCount = (lByteCount-(lByteCount % 4))/4;
                lBytePosition = (lByteCount % 4)*8;
                lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<<lBytePosition));
                lByteCount++;
            }
            lWordCount = (lByteCount-(lByteCount % 4))/4;
            lBytePosition = (lByteCount % 4)*8;
            lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition);
            lWordArray[lNumberOfWords-2] = lMessageLength<<3;
            lWordArray[lNumberOfWords-1] = lMessageLength>>>29;
            return lWordArray;
        };

        function WordToHex(lValue) {
            var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
            for (lCount = 0;lCount<=3;lCount++) {
                lByte = (lValue>>>(lCount*8)) & 255;
                WordToHexValue_temp = "0" + lByte.toString(16);
                WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
            }
            return WordToHexValue;
        };

        function Utf8Encode(string) {
            string = string.replace(/\r\n/g,"\n");
            var utftext = "";

            for (var n = 0; n < string.length; n++) {

                var c = string.charCodeAt(n);

                if (c < 128) {
                    utftext += String.fromCharCode(c);
                }
                else if((c > 127) && (c < 2048)) {
                    utftext += String.fromCharCode((c >> 6) | 192);
                    utftext += String.fromCharCode((c & 63) | 128);
                }
                else {
                    utftext += String.fromCharCode((c >> 12) | 224);
                    utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                    utftext += String.fromCharCode((c & 63) | 128);
                }

            }

            return utftext;
        };

        var x=Array();
        var k,AA,BB,CC,DD,a,b,c,d;
        var S11=7, S12=12, S13=17, S14=22;
        var S21=5, S22=9 , S23=14, S24=20;
        var S31=4, S32=11, S33=16, S34=23;
        var S41=6, S42=10, S43=15, S44=21;

        string = Utf8Encode(string);

        x = ConvertToWordArray(string);

        a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476;

        for (k=0;k<x.length;k+=16) {
            AA=a; BB=b; CC=c; DD=d;
            a=FF(a,b,c,d,x[k+0], S11,0xD76AA478);
            d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756);
            c=FF(c,d,a,b,x[k+2], S13,0x242070DB);
            b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE);
            a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF);
            d=FF(d,a,b,c,x[k+5], S12,0x4787C62A);
            c=FF(c,d,a,b,x[k+6], S13,0xA8304613);
            b=FF(b,c,d,a,x[k+7], S14,0xFD469501);
            a=FF(a,b,c,d,x[k+8], S11,0x698098D8);
            d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF);
            c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1);
            b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE);
            a=FF(a,b,c,d,x[k+12],S11,0x6B901122);
            d=FF(d,a,b,c,x[k+13],S12,0xFD987193);
            c=FF(c,d,a,b,x[k+14],S13,0xA679438E);
            b=FF(b,c,d,a,x[k+15],S14,0x49B40821);
            a=GG(a,b,c,d,x[k+1], S21,0xF61E2562);
            d=GG(d,a,b,c,x[k+6], S22,0xC040B340);
            c=GG(c,d,a,b,x[k+11],S23,0x265E5A51);
            b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA);
            a=GG(a,b,c,d,x[k+5], S21,0xD62F105D);
            d=GG(d,a,b,c,x[k+10],S22,0x2441453);
            c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681);
            b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8);
            a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6);
            d=GG(d,a,b,c,x[k+14],S22,0xC33707D6);
            c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87);
            b=GG(b,c,d,a,x[k+8], S24,0x455A14ED);
            a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905);
            d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8);
            c=GG(c,d,a,b,x[k+7], S23,0x676F02D9);
            b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A);
            a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942);
            d=HH(d,a,b,c,x[k+8], S32,0x8771F681);
            c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122);
            b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C);
            a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44);
            d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9);
            c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60);
            b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70);
            a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6);
            d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA);
            c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085);
            b=HH(b,c,d,a,x[k+6], S34,0x4881D05);
            a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039);
            d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5);
            c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8);
            b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665);
            a=II(a,b,c,d,x[k+0], S41,0xF4292244);
            d=II(d,a,b,c,x[k+7], S42,0x432AFF97);
            c=II(c,d,a,b,x[k+14],S43,0xAB9423A7);
            b=II(b,c,d,a,x[k+5], S44,0xFC93A039);
            a=II(a,b,c,d,x[k+12],S41,0x655B59C3);
            d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92);
            c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D);
            b=II(b,c,d,a,x[k+1], S44,0x85845DD1);
            a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F);
            d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0);
            c=II(c,d,a,b,x[k+6], S43,0xA3014314);
            b=II(b,c,d,a,x[k+13],S44,0x4E0811A1);
            a=II(a,b,c,d,x[k+4], S41,0xF7537E82);
            d=II(d,a,b,c,x[k+11],S42,0xBD3AF235);
            c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB);
            b=II(b,c,d,a,x[k+9], S44,0xEB86D391);
            a=AddUnsigned(a,AA);
            b=AddUnsigned(b,BB);
            c=AddUnsigned(c,CC);
            d=AddUnsigned(d,DD);
        }
        var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);
        return temp.toLowerCase();
    }
};